Need some 700R4 advice

[Texasupton1]

I have a stock '83 305 that I just replaced the Qjet with a 500 CFM Edelbrock. THe engine runs great. However, with both carbs, we cant get it to downshift at full throttle. I thought it was just out of adjustment with the qjet, so when we put the Edelbrock on, with new TV linkages adjusted, it still wont drop down. Ideas??

While testing it, I noticed that the tranny was slipping a little between shifts.It was low on fluid, but after filling it, it still slips. It is fine off the line, pulls good, and shifts fine by hand, but there is a slip and a rev between gear changes. Any ideas?

Solenoid? It has set for about 3 years, would a fluid change and clean screen/filter help? Thank you.

[trout]

im having the same problem in my 87 but i put a new gasket filter kick down cable and all new fluid people i talk to keep saying it might be the govener in side the pan hope some one can help uss

[Goldfinger]

Do you have enough throttle travel to engage the downshift? I had that problem with a 1406.

[79k30dually]

The geometry for the cable at the carb is critical. Bowtieoverdrives.com has an excellent section on TV cable basics, adjustments and sells the parts to fix the problem. Quality parts, good information. Good luck, Ron

[Texasupton1]

used Mr. Gasket and Jeggs brackets etc. as directed by Edelbrock

[Texasupton1]

I had the throttle travel issue but we fixed it. It is not the issue.

[misterchevy]

If its a 700r4 is the TC lock up hooked up, i had a 700r4 on a 350ci but it was from a 4.3 s10. It wasnt really up to the job.

[Texasupton1]

So I went out to check the tv cable. At WOT, there was still about 1 inch of slack in the cable. SO I took a little plastic clip about 1/2 inch wide and cliped on the cable to take up about half the slack. It no longer slips and actually shifts very firm. Each gear seems a little "longer" if that makes any since. It runs like a totally different truck. I also put 3 gallons of 93 octane gas in and the pinging all but went away. I will have a perminant adjustment done to the tv cable and timing after the holidays.....

[jitteryguy]

to adjust the cable you have to push the clip and pull the thingy all the way out, then the engine off you open the throttle all the way open, it will adjust it self to the proper tension. if you have the correction bracket on the carb everthing will good on that end.
a lota folks dont like the 700R4 and say there junk, I've had em in several truck's and never had any real issue's even pull'n a race car trailer.

[67swb72klb]

from what i have found out is that u want a presure increse rite off idle there is a 1/8 port above the shifter shaft u can check it with a 0-300 psi guage that is how i set mine up

[67swb72klb]

SUBJECT: Proper installation of the throttle valve cable on after-market carburetors or fuel injections. This information applies to all 700R4, 4L60 and 200-4R transmissions. Throttle valve cable adjustment instructions, numbers 4, 5 and 6.
#1. The button that the cable hooks to at the carburetor or throttle body must have a 1 and 3/32-inch radius from the center of the throttle shaft to the center of the button the cable hooks to.

#2. Looking at the throttle shaft lever from the left side at idle position, 33% of the throttle lever total travel must be to the rear of the throttle shaft centerline. And at wide-open throttle, 67% to the front of the throttle shaft centerline. This will be about ½-inch to the rear and 1 inch to the front of the throttle shaft centerline.

#3. The throttle valve cable must be hooked up in this manner so the pressure will rise faster off idle and slow down at heavy throttle. If the pressure cable is pulled in a more even manner the pressure will be too low at light throttle. Failure to hook-up the throttle cable in this way will burn the three-four clutch pack up fast.

#4. The throttle valve cable controls transmission pressure. Adjusting this cable is the most important step when installing a 700R4, 4L60 or 200-4R transmission.

#5. The final step is to adjust the throttle valve cable. The cable must be adjusted so it is pulled fully out at wide-open throttle. To make sure disconnect the cable, hold the throttle wide open with your left hand, pull the cable fully out with your right hand and see if the cable end lines up with the button on the throttle lever. The cable should also be pulled out 3/8 to 1/2 of an inch at idle.